| US 7,388,864 B2 | ||
| Data communication apparatus, data communication system, data communication method, data communication program and information recording medium | ||
| Mitsuhisa Kanaya, Tokyo (Japan) | ||
| Assigned to Ricoh Company, Ltd., Tokyo (Japan) | ||
| Filed on Oct. 09, 2003, as Appl. No. 10/681,194. | ||
| Claims priority of application No. 2002-299630 (JP), filed on Oct. 11, 2002; and application No. 2003-347880 (JP), filed on Oct. 07, 2003. | ||
| Prior Publication US 2004/0109467 A1, Jun. 10, 2004 | ||
| Int. Cl. H04L 12/00 (2006.01) | ||
| U.S. Cl. 370—390 [370/432] | 25 Claims |
| 1. A data communication apparatus comprising:
a first communication part which transfers data from one single transfer source to a plurality of other transfer destinations
concurrently;
a second communication part which transfers data from one single transfer source to another single transfer destination;
a re-transfer part which, when receiving reception error information from at least one of a plurality of other transfer destinations
which indicates that data reception has not been performed properly as a result of the data transfer being performed by said
first communication part for the plurality of other transfer destinations, performing data re-transfer to said at least one
of other plurality of transfer destinations with one selected from said first and second communication parts according to
the number of said at least one of other plurality of transfer destinations which has transmitted the reception error information,
wherein upon selection of said first communication part, prior to performing said data re-transfer, an ignore instructions
is communicated to that portion of said plurality of transfer destinations which did not transmit reception error information.
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